body{
    background-color:#F9F9F9;
}
.div_nav{
    width:900px;
    height:40px;
    background-color:#F3F3F3;
    float:left;
    margin-left:20px;
    margin-top: 20px;
}
#div_icon{
    float:left;
    margin-top: 10px;
    font-size: 20px;
    color:#666666;
}
.div_font{
    float:left;
    margin-top: 15px;
    font-size: 10px;
    font-weight: lighter;
}
.div1{
    margin-left:20px;
    padding-top: 50px;
}
#div_table{
    text-align:center;
}